Blast-furnace-charging device.



'0. P.' TURNER.

BLAST FURNAGE GHARGING DEVICE.

APPLICATION FILED AUG. 14, 1907.

@Qi km0/aow 51h/newton ANDREW. E. (mmm co.. wow-LITHDGRAPMRPswAsMmGmN..nc.

Patented Jan. 18,1910.

C. P. TURNER. BLAST FURNAGB GHARGING DEVICE. APPLIOATION FILED AUG. 14,1907.

Patented Jan. 18, 1910.

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@Homw G. P. TURNER.

BLAST PURNAGE GHARGING DEVICE.

PPLIOATION FILED AUG. 14, 1907.

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l c. P. TURNER. BLAST IURNAGE UHARGING DBVIGE. APPLI04TION' FILED AUG.14, 1907.

947,1 36. l Patented Jan. 18,-1910.

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ANDREW. s. GRAHAM cn. Pnoovuwosnwnins. wAsHmcTaN. n. c,

"UNITED sTATEs PATENT onirica.

CHARLES 1?. TURNER, OF HARRISBURG, PENNSYLVANIA.

BLAST-FUR-NACEQCHARGING DEVICE.

To all whom it may concern:

Be it known that I, CHARLES P. TURNER, a citizen of the United States,residing at Harrisburg, county of Dauphin, State of Pennsylvania, UnitedStates of America, have invented certainnew and useful linprovements inBlast-Furnace-Cliarging De# vices; and l do hereby declare the followingto be a full, clear, and exact description of the invention, such willenable others skilled in the art to which it appertains to make and usethe same, reference being had to the accompanying drawings, and toiigures of reference marked thereon, which form a part of thisspecification.

This invention relates to means for auto-` matically turning a stockreceiving hopper or other receptacle of a blast furnace charging device,in such a manner that the stock will be uniformly distributed over vthecharging bell of the blast furnace charging device, and from which bellthe stock will be dropped into the furnace in uniform distribution withrespect to the axis of the furnace.

The invention comprises means for automatically and selectively rotatingthe hop,- per, the movement of the hopper being ac complished bysuitable devices operated by the movement of a skip-bucket or otherhoisting device and in conjunction with means to selectively control thecooperating elements that cause the movement of the hopper, as willhereinafter be more fully described and claimed.

In the drawings in which'like parts .are

mechanism. Fig. 7 is a perspective view of one of the trips.

The blast furnace 10 is provided with the usual charging .bell 11suspended by ya bell rod 12, which bell rod is connected to any suitablemechanism to permit the b'ell to be operated when it is desired todeliver stock which has been deposited on it to they interior of thefurnace. Over the bell 11 is casing 13 on which is supported therecepta-Specification of Letters Patent.

Application ined August 14, 1907.

Fig. 5 is a section of the bell and serial No. 388,486.

cle or hopper 14 closed at its bottom y'by a small, bell 15. The hopper14 issupported on anti-friction rollers 16, in the roller Way 17 on thecasing 13 so that the receptacle ory hopper 14 is free to be turnedabout its ver` tical axis; and in order to permit it to be turned, it isprovided with a circular rack 18 with which engages the gear wheel 19ykeyed to the short shaft 20 and supported by the bracket 21 on thecasing 13, the other end of said shaft 20 carrying a beveled wheel 22.The materials with which the furnace is to be filled are hoisted in'skipbuckets 23 up an inclined way 24 by means Patented Jan. 18, 1910. Y

of ropes y25 guided over sheaves 26 and driven by a winding drum 27actuated by any suitable source of power. v

The construction just described is all of a well known type and does notform a part of this invention and so far as the present invention isconcerned, may be varied or changed in any respect whatever so llong asthere is retained in the structure the revoluble receptacle or hopper14, with means Vfor dropping its contents when rotated in any horizontalangular position.

The novel feature of the present invention consists in the mechanism bymeans of which ,the receptacle lis turned about its vertical axis insuch a manner that the suocessive 'loads of material delivered to it bythe .skips 23 may be automatically dropped in to the revolublereceptacle 14 and onto the bell 11 in any required number of angularpositions aboutthe vertical axis of the bell 11 and receptacle 14, ythesequence of these positions being automatically controlled.

Qn the skip-bucket 23, Figs. 2 andy 3, l providev suitable brackets 28in which are mounted a shaft 29 carrying a lever arm 30 provided with aweight 31 adjustable along the arm and on one end of the shaft,.preferably but not necessarily,.at the center line of the skipebucketis keyed a pawl 32 projectingupward andon the other end of the shaft iskeyeda pawl 33 -projecting doWn ward to trail over the controlling tripsto be described. The upwardly projecting pawl 32 is adapted to engageandoperate a bodily movable rack, here shown as an endlessrack 34comprising an endless belt or endlessl chain passing at its ends. overpulleys.' or rollers 35 and 36 tmounted in brackets37 onthe Way.Theuppertpulley 36, is carried by shaft orspindle 38 that has on one enda bevel gear wheel 39 that meshes with a similar gear wheel 40 on theend of the flexible shaft 41 the sections of which are connected byuniversal or Cardan joints 42. This shaft drives at its upper end apinion 43 meshing With the pinion 22, Fig. 5, to drive or rotate thereceptacle 14. The movable rack 34 is given such a length that thegreatest angular motion required by the receptacle 14 at any one timewill be obtained While the bucket 23 passes under the rack. Motions ofless amplitude are obtained by disengaging the pawl 32 from the rackafter the desired angular movement has been obtained and this isaccomplished by means of trips acting on the disengaging pawl 33. Thesetrips operate in the frame 44 secured to or forming a part of theinclined way and the individual height of the trips may be varied inrespect to the plane of movement of the tail of pawl 33, for example asshown in Fig. 2, there are seven trips 45 in alinement, the first threeof which at the bottom of the way are depressed so as to permit the pawl33 to ride over them and allow the pawl 32 to be held in engagement withrack 34 by the counterweight 31. When the pawl 33 rides on the elevatedtrips 45, the pawl 32 is disengaged from the rack 34 thereby stoppingthe angular movement of the receptacle 14. These trips have rabbetedends, more clearly shown in Figs. 3 and 7, and one end of each trip isbeveled on the rabbeted portion at 46 and the end trips of the alinedset have only one rabbeted end, and are beveled as shown at 47. Thesebevel faces are so constructed that they form a continuous surfacebetween the inactive and the active trips to permit the pawl 33 to rideover them readily and when adjacent trips are not elevated the beveledportion 46 of one trip lies behind the rabbet on the other so that pawl33 will move or trail over practically a continuous surface. Each trip45 is provided at its bottom and near its ends with perforated ears 43in which are hooked one end of coiled retracting springs 49 whoseopposite ends are secured in a suitable rail 50 on the way. Between theears 48 is pivotally secured a single acting piston 51 of an aircylinder 52, supplied by air through a pipe 53 so that when it isdesired to throw any one or a number of successive trips into operativeposition, air is forced into the cylinder or cylinders 52 to move thepiston or pistons 51 and the trip or trips 45 connected thereto againstthe stress of their respective springs 49. Each cylinder 52 is providedwith a vent cock 54 that is normally open and the degree of openingthereof can be regulated so that after the piston 51 has been movedoutward by the compressed air and the air supply has been shut olf, thecylinder will be automatically vented through the cock 54 by reason ofthe springs 49 pulling the trip 45 and the piston 51 pivotally connectedthereto downward. Each pipe terminates in a manifold 54 and slightlydistant from the manifold is a Huid pressure chamber 55 supplied by airfrom a pipe 56. The bottom of chamber 55 is perforated and movingbetween the manifold and chamber 55 is an endless perforated controllerband 57 anoving over guide rollers or cylinders 58, the structure ofwhich manifold and the method of controlling and selectively operatingthc trips is shown and described in application Serial Number 357 ,439filed F ebruary 14, 1907.

The operation is as follows: The skip 23 is loaded with stock and isdrawn up the way by means of the ropes operated b v the hoist 27. As thebucket passes along the way the pawl 33 trails along the alined trips45, the weight 31 holding paw] 32 in such a. position as to engage theendless chain or rack 34 so that this chain or rack will be moved inunison with the bucket thereby rotating the spindle 23, the bevel gears39 and 40, the flexible shaft 41, bevel gear wheels 43, 22 and 19. torotate the receptacle or hopper 14. As soon as the pawl 33 strikes thebevel face 4G of the lirst trip that is raised, shaft 29 will be rotatedto cause the pawl to rotate out of engagement with the movable rack 34so that the rotating movement of the receptacle llwill cease, the bucketthen continues its movement to the top of the way and dumped into thereceptacle 14. The air supply through the manifold may have meanwhilebeen cut olf and all the trips be returned to their normal position, thebucket descends. the endless band 57 is moved to select' the nextsuccessive series of trips to be lifted, air is passed through themanifold into the pipe or pipes 53 to lift the selected series of tripsand the skip ascends to the top of the hoist repeating the sameoperations. 'lhe flexible driving connection between the. endless rack34 and the receptacle 14 is not necessarily confined to the particulararrangement here illustrated as this may be varied at will and groovedwheels may take the place of the initer gears on the spindles 28 and 2Oand these wheels be connected b v a driving rope guided where necessaryby suitable sheaves.

t is evident that the sequence of the angles through which thereceptacle 14 will be turned by successive trips of the skip can be anydesired number of degrees by perforating the belt 57 with rows of holeswhose numbers correspond respectively with the magnitude of thesuccessive angles through which the receptacle is to be turned.

I claim:

1. In a furnace charging device, the com bination with a movable stockreceptacle, a stock carrier, a way on which the carrier travels; of amovable rack, a device on the carrier to engage the rack and means onthe way to control said device, and mechanism between the receptacle andrack to move the receptacle.

2. In a furnace charging device, the combination with a movable stockreceptacle, a stock carrier and a Way on which the carrier travels; of abodily movable rack, a device on the carrier to engage the rack as thecarrier moves along the Way and trips on the vvay to control theengagement of said device with the rack and mechanism between thereceptacle and rack, and operated by the movement of the rack to movethe receptacle.

In a furnace charging' device, the combination with a rotatable stockreceptacle, a stock carrier and a Way on which said cai'- rier travels;of a vflexible endless rack, a pulley at each end of the rack and overwhich the rack travels, flexible driving means between one of saidpulleys and the receptacle, a paWl pivoted on the carrier and normallyheld in the path of the rack as the carrier travels past the rack toengage and move the rack, a plurality of movable, alined trips tocontrol the engagement of the paWl and rack and means to selectivelycontrol the movement of the trips.

4. In a furnace charging device in combination; a plurality of alinedmovable trips interlitting at their adjacent ends, the interfittingportion of one of two adjacent trips being beveled and adapted to becovered by the interiitting portion of the other adjacent trip when thetrips are at the same level, a stock receptacle, mechanism to rotateit,fand means cooperating With the mechanism and alined trips toact-uate said mechanism.

5. In a furnace charging device, in combination; a plurality of movabletrips having interiitting ends, one of the ends of each of the adjacenttrips beveled at the top, means to selectively control the number oftrips to be moved into operative position, a stock receptacle, mechanismto rotate it and means cooperating With the mechanism and trips toactuate said mechanism.

6. In a furnace charging device, a plurality of alined movable tripshaving interfitting rabbeted ends, one of the rabbeted endsof each ofthe adjacent trips beveled at the top, means to selectively control thenumber of trips to be simultaneously moved into operative position, astock receptacle, mechanism to rotate it and means cooperating With themechanism and trips to actuate said mechanism.

7. In a furnace charging device, the combination With a rotatable stockreceptacle, a skip and a Way on which the skip travels; of an endlessrack chain mounted on the Way, a pulley driven by the chain, gearingbetween the pulley and receptacle, a pavvl on the skip to engage thechain, a] ined trips and means cooperating With the trips and paWl torelease the latter from the chain when desired.

8. In a furnace charging device, the combination vvith a movable stockreceptacle a skip and a Way on which the skip travels; of a movable rackand mechanism actuated by the movement of the rack to move thereceptacle, a number of trips, a fluid pressure cylinder and piston tomove each trip, means to selectively control the supply of motive iuidto the cylinders, and mechanism carried by the skip and controlled bythe trips to engage and move the rack.

9. In a furnace charging device, the combination with a movable stockreceptacle, a way, a skip or hoist traveling on .said Way and mechanismto move the receptacle variable distances including actuating meansmoved along controllable distances With the skip or hoist during aportion of its travel.

10. In a furnace charging device, the combination vvith a movable stockreceptacle, a Way, a skip or hoist traveling on said Way, mechanism tomove the receptacle including actuating means moved along in engagementwith the skip or hoist during a portion of itsrk travel, and means tocontrol and vary the extent of said movement.

In testimony that I claim the foregoing as my invention, I have signedby name in presence of two subscribing Witnesses.

- CHARLES P. TURNER. Witnesses Guo. W. Parsons, I-I. B. HAIN.

